Nanostructure and oxide phase distribution in Co 36-40Fe 64-60 electrodeposited films for magnetic field sensors

S. Elhalawaty, Ray Carpenter, J. George, S. R. Brankovic

Research output: Contribution to journalArticle

2 Scopus citations

Abstract

Co 36-40Fe 64-60 films were electrodeposited on Cu/Si substrates from electrolytes containing variable amounts of Fe 3+, to control the film's oxygen content. The films were body centered cubic with grain sizes of 10 to 20 nm. Analytical electron microscopy was used to determine oxygen distributions and bonding states in the films. Intergranular trivalent Fe 2O 3 was distributed along grain boundaries in the films with highest oxygen content. A lower volume fraction of intragranular FeO particles were observed in low oxygen content films. Intergranular Fe 3+ oxide increased the coercivity and magnetoresistance and reduced the mass saturation magnetization relative to the low oxygen content films.

Original languageEnglish (US)
Article number07A330
JournalJournal of Applied Physics
Volume111
Issue number7
DOIs
StatePublished - Apr 1 2012

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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